Oil filter



Nov. 24, 1953 T. s. LASKY 2,660,315

OIL FILTER Filed Jan. 16, 1950 2 Sheets-Sheet l a l 32 35 a2 6 g o o o o o 0 G O O O 0 0 o 0 O O o o o o "o v o o 0 o oo" o o o o o O O o o o o o -oo o o o a2 32 g a 32 is /a Thomas 8. Lasky INVENTOR. I

T. S. LASKY OIL FILTER Nov. 24, 1953 2 Sheets-Sheet 2 Filed Jan. 16, 1950 Fig. 3.

Thomas 8. Lasky INVENTOR.

Patented Nov. 24, 1953 UNITED STATES PATENT OFFICE OIL FILTER Thomas s. Lasky, Kingston, Pa.

Application January 16, 1950, Serial No. 138,781 7 scams. (01. 210-131) This invention relates to oil filters such as are commonly used in connection with the lubricating systems of motor vehicles, and has more particular reference to an improved cartridge for such filters.

An object of the invention is to provide a cartridge which is simple and durable in construction, and which has a removable top closure disk which is securely held in place but readily removable to facilitate renewal of the filtering material therein. 7

Another object is to provide efiicient means for preventing leakageof oil from the ends of the central tube of the cartridge about the central rod which forms part of means to hold the cartridge in spaced concentric relation to the filter casing and to hold the cover of the casing in place.

Other objects and features of the invention will be apparent from the following description when considered with the accompanying drawings, in:

Figure 3 is a central vertical'sectional view of a filter embodying a cartridge of the form shown in Figures 1 and 2.

Figure 4 is a horizontal section taken on the line 4-4 of Figure 1. V

Figure 5 is a fragmentary'central vertical sectional view of the upper'portion of a cartridge, showing a modificationof the meansfor securing the top closure disk in place. H

Figure 6 is a'bottom plan view of theclosure disk shown in Figure 5.

Figure 7 is an elevational view of the closure disk shown in Figure 6.

Referring in detail to the drawings, 5 indicates the cup-shaped imperforate body of a cylindrical casing, and 6 the domed cover detachably secured on the top thereof. The bottom 1 of the casing body 5 has a central nipple 8 for connection with an oil conducting pipe 9. A rod I is fixed at its lower end to the bottom I of the casing body centrally of the latter, and this rod projects above the top of the body and through a central opening II in the cover 6. A wing nut I2 is threaded on the upper end of rod III to removably secure the cover 6 on the body 5. The body 5 also has a side nipple 13 for connection with an oil con- 'disk l1 removably fitted and secured within the upper end of said shell, and a central tube [8 fixed at its lower end in a central opening l9 ofthe disk [6 and projecting into a central opening 20 of the disk ll. The outer surfaces of the disks l6 and I! are centrally recessed to form tapered seats 2| and 22 for the tapered faces of washers 23 and 2d snugly fitted on-the rod I0. I The ends of tube l8 terminate inwardly of the seats 2| and 22, and the lower end of said tube is flared or expanded as at 25 to fix it inthe opening IQ of the disk [6. The shell i5 is adapted to be filled with filtering material 26, as usual.

The lower end of rod I0 is provided with an axial passage 2'1, the lower end of which communicates with the bore of nipple 8 and the upper end of which communicates with a transverse passage 28 extending tothe periphery of said rod. Intermediate its ends, the tube 18 is provided with perforations 29. Thus, oil entering through either of the pipes 9 or l4 will pass through the filter to the other of said pipes.

Theseat 2| in the bottom of the cartridge is pressed against the washer 23, and the washer 24 is pressed against the seat 22 in the top of the cartridge, by means of a helical spring 30 disposed on the rod I0 between the casing cover 6 and a combined oil seal and-follower 3i slidably fitted on said rod and disposed on the washer 24. This holds the cartridge centered in the casing with the tube [8 in spaced concentric relation to the rod [0, and the washers 23 and'24 prevent escape of oil-from the ends of tube [8 about the rod It;

The shell I5 has series of inwardly embossed ribs 32 adjacent the ends thereof which provide stop shoulders on which the disks l6 and I? seat. The lower end of the shell I5 is swaged inwardly as at 33 to secure the disk 16 in place.

Bayonet means is provided to removably secure the closure disk il in place, and in the form of Figures 1 to 4 inclusive, such means includes uniformly spaced radial pins 34 carried by and projecting from the peripheral edge of the disk I! and coacting with angular slots 35 provided in and extending downwardly and laterally from the upper edge of the shell 15. In the form of Figures 5 to 7 inclusive, the closure disk I1 is provided with a peripheral groove 33 and uniformly spaced entrance grooves 3'l leading from the groove 36 to the bottom of said disk through which the ribs 32 may pass. Thus, when the ribs 32 are alined with the grooves 31, the disk l'l may be inserted into the shell l5, whereupon the disk 11' may be turned to position the ribs 32 in groove 36 out of registry with the grooves 31 to secure the disk H in place. The same operation takes place when the pins 34 are registered with the vertical ends of slots 35 and then the disk I! is turned to move said pins into the lateral portions of slots 35. In this way, the closure disk may be quickly applied or removed to facilitate renewal of the filtering material, a reversal of the operation resulting in quick removal-of the closure disk. To facilitate turningofthe closure disk, it is provided with diametrically opposed posts 38 in which are pivoted the ends of a bail like folding handle 39.

From the foregoing description, the construction, operation and advantages of the presentmevention will be apparent to those skilled. in the art What is claimed as new is:

1. For use in an oil filter of the type embodying an imperforate casing having a control rod. provided at its lower end. with, an oi1.passage-,.a filter cartridge comprising a cylindrical shell adapted to contain a quantity or filtering material, said shell having lateral oil passages intermediate the ends thereof, said shell including a series; of spaced inwardly embossed ribs adjacent. each end, thereof, said ribs providing supporting shoulders adjacent each end-of said shell, a bottom disk seated on the shoulder adjacent. the bottom of said. shell, the lower end of said shell being swaged inwardly to permanently secure said bottom disk in place, a closure disk seated on, the shoulder adjacent the top of said shell, a bayonet type joint: between. said closure disk and said shell; said disks being relatively thick with respectto said shell, said disks being providedwith; central apertures, a taperedwasher seat in each of, said; disks about said central apertures, a tube fixed at. its lower end in the central aperture of said. bottom disk, the

upper end of said tube being slidably: and rotatably received in said central aperture of said closure disk.

2. For use in an oil filter haYiI a-n imperforate casing including a, removable cover, a rod secured to the bottom of the casing and extending through said cover and an axialpassage in said rod terminating in a transverse. passage intermediate the ends of the-rod al cartridge adapted; 50

to contain. a quantity or filtering; material coming a central aperture, a tube fixed in said central aperture and extending in said shell, said tube being perforated intermediate its ends, a second closure disk removably seated on the other of said ribs, a bayonet connection between said shell and said second closure disk, said sec-- ond closure disk having a central aperture, said tube extending into said aperture of said second closure disk, a tapered washer seat about said central apertures in each-.pil said closure disks, each of said washer seats being adapted to receive a resilient sealing washer for sealing the :space between said rod and said disks.

:filter, arfilter -retaining cartridge comprising a amhaving a sloping washer seat formedin communication with the axial aperture thereof, each-of.

prising a perforate cylindrical shell, inwardly ex.-

tending annular ribs. adiacenteach end of, said shell, 9. first closure disk permanently secured on one of said ribs,; saidfirstclosure'disk havperforated cylindrical shell, inwardly extended ribs providing stop shoulders adjacent each end of said shell, a bottom disk mounted on one of said shoulders, the adjacent edge of said shell being inturned over said bottom disk,. said bottom disk having an axial aperture, a tuberigidly' secured in said aperture and extending axially-in said shell,, a closure disk seated..- on the: other.

shoulder, a detachable bayonet type conn'eetign between said closure disk and said shell, said closure disk having an axial aperture-,, said tube extendingv into'said axiaL aperture; of said closure. disk, saidbottom disk and said closure. dis-k each said. washer seats being adapted. to receive; a

tapered resilient sealing washer for. sealing the Number Name Date:

1,348,536 Billings et al' Aug. 3; regs 1,502,124 Schaefer. July 22,1925 1,814,572 Shafier u1 14,19 1 7 ,1339350 Slagel Jan; 5, I932 2,057,932 Bbl'ser out 20;,11936 2,100,951 Glass et' al; Nov..30, 1937 2,112,439 Graft et all Mar. 29;;1938 2,201,418 Williams et a1. lVl'ay 21;,1940 2,331,141 Russell .Aiug. 7, I945 2,427,320 Zech r Sept... 9,, 119a? 2,487,146 Lasky '1 r ov; 8519.49 1559;133- Schultz Ji'uvjs; r951 2,568,181 Zimmerman et' al, Sept 1831x951 2,584,771 

